[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4793: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3897)[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4795: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3897)[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4796: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3897)[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4797: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3897)Moped Riders Association • View topic - THE OFFICIAL QT50 THREAD!

Moped Riders Association

Official Home of the IAAMR - International Association for the Advancement of Moped Riders||Administrator: pedman@mopedriders.org

Neighbor has a garage-bound QT50 with 1400 miles on it. Extremely dirty and missing the carb but otherwise doesn't look like too much to get it breathing again. Plan to keep engine completely stock except for carb and pipe.

May try to improve front shocks/triple-tree and mount larger wheels. I'd like to do a minimalist rebuild of this bike. Stripped of all cosmetic plastic, replace large headlamp and taillamp with a tiny halogen units, remove instrument cluster, etc.

Any links to previous efforts to lengthen the drive shaft and tube? Would love to relace the hubs with 24in 28hole BMX alum rims and a nice sturdy high pressure lighter weight road tire...

Any experience with a suggestion seen elsewhere on adding 4mm of spacer under the jug and milling same from top in order to take advantage of exhaust port volume that is blocked by the original design?

I've created a forum specific to the Yamaha QT50. My hope is that we can share tips and advice for the Yamaha QT50. I contacted Tab from this site and was granted permission before soliciting the QT50 forum.

It's hard to find sites dedicated to specific models but when you do it's sure nice.
Hope to see you there!

Hi, I just registered. I have a QT50 I hope to start restoring soon. I got it from my grandfather in 1992. I believe he was the original owner. It's been in a friend's barn for about 18 years. I lost the key. Can I get it running without the key?

Hi, I'm new to this forum. I bought a qt50 2 weeks ago with no carb, but otherwise complete bike, I bought a carb off ebay and put in a new battery. It runs real nice now. I had one a couple of yrs ago but sold it, I was sorry I sold it, but I'm going to keep this one. nice thread on qt's, lots of good info.

The speedometer on my QT50 is not working and I've isolated the problem to the drive gear/meter gear in the front hub. I haven't been able to remove them. The drive gear appears to be held in by a rubber retainer ring. I don't want to destroy the ring since I think its no longer available. Any tips on how to do this? The service manual doesn't explain it.

Should have done this FIRST. Any of you with an old moped or ANY 2-stroke change crank seals from the start. If it sucks on the left it will get air in and mess up your attempts at jetting. Sucks on the right you pull tranny oil in and burn it. Mine was doing this and steadily getting worse.

Doing crank seals on my 81 QT50 (60) I looked high and low on the internet. Couldn't find if this could be done in the frame without separating the crankcases......IT CAN.

Service manual has a complete disassembly of the engine but doesn't tell you it's not needed for crank seals. Left side you have to pull the flywheel.

Take a small drill bit and slowly, carefully drill a hole in the crank seal. Crank seals are metal inside surrounded by rubber. The bearing is right behind so be careful. Run a wood screw in the hole and pull the seal out. There are videos online to watch how to do this.

For right side drain oil, remove cover, try to save gasket, if not order one.

Put an all copper penny between gears and break the crank gear loose.

Remove clutch, primary gear and all else in the way. This seal you can pry out carefully with a small screwdriver.

Drive the seals in squarely with a large washer and long socket. Or anything that will get the seals installed flush and straight.